What I Learned Evaluating Okki Go, Email Verification, and B2B Contact Data Vendors

When RevOps handed me the vendor list

In January 2025, our RevOps director sent me a spreadsheet with 11 vendors. I'm the office administrator for a 180-person B2B software company. I manage all sales tooling and vendor ordering—roughly $420,000 annually across 14 vendors. I report to both operations and finance. My job is to make sure purchases don't blow up in legal, finance, or the sales floor.

The request looked simple: consolidate our outbound stack. We had three SDRs, two AEs, one outsourced agency, and a CRM that had more duplicates than a high school reunion. The list included Okki Go (sometimes written okki-go), ZoomInfo, Hunter, Instantly, Artisan AI, and a few smaller data enrichment vendors. RevOps wanted better outbound research, cleaner B2B contact data solutions, and less manual list building.

It's tempting to think you can just compare cost per contact. But contact data isn't office paper. A cheap list that gets blocked by legal or bounces into a spam trap costs more than the invoice shows.

The first spreadsheet looked great (that was the problem)

I built a comparison matrix. Columns: contacts, verified emails, intent data, enrichment fields, LinkedIn coverage, CRM sync, annual price. Three vendors offered roughly 50,000 contacts. One came in $18,000 cheaper than our current provider. Finance liked it. I liked it because it made me look efficient.

Then legal asked two questions: Where does the data come from? Can you show us the lawful basis and opt-out process? The vendor sent a one-page PDF that said 'proprietary sources.' No DPA. No source audit. No clear way to suppress opted-out contacts. We rejected the order. I had already told my VP we'd save $18k. That was a bad week.

The vendor failure in March 2025 changed how I think about B2B contact data solutions. Under GDPR (effective May 25, 2018), B2B contact data still needs a lawful basis. Under CCPA/CPRA (effective January 1, 2023), California consumers have rights over personal information. And per Google's Email Sender Guidelines (updated February 2024), bulk senders need authentication and low spam complaint rates. A cheap list can create expensive compliance problems.

That's when I added a rule to my vendor scorecard: no pilot until legal and finance both sign off on the data workflow.

The pilot that actually taught us something

We ran a three-week pilot with Okki Go. I was skeptical because I'd been burned by AI SDR pitches before. But this wasn't just a list purchase. The Okki Go AI agent did outbound research on target accounts, pulled recent context, and suggested personalization. We used waterfall enrichment plus intent signals to prioritize accounts. And we ran every contact through an email verification service before any send.

Our ICP was narrow: mid-market SaaS, 50-500 employees, specific titles in RevOps and sales leadership. We uploaded 2,400 accounts. The Okki Go outbound research surfaced useful details—recent funding, hiring, tech stack changes—that our SDRs wouldn't have found manually in the time we had. We kept human-in-the-loop review. No one sent anything without reading it first.

In that pilot, our reply rate went from about 1.1% to 2.3%. I won't claim that will happen for you. Small sample, specific ICP, and we changed the offer too. But the bigger win was that our SDRs spent less time researching and more time writing.

The turn came when our agency asked for 20,000 contacts per week. Okki Go wasn't built for that volume in our messy CRM. The agent works best when you have clean account data and a defined ICP. If you need raw volume and don't care about account-level research, it's probably not the right fit. That's not a knock—it's just the boundary.

What should revenue operations teams evaluate in data enrichment company GTM automation?

After the pilot, I wrote a one-page checklist for RevOps. It wasn't about features. It was about risk and workflow.

• Data provenance: Can the vendor show where contacts came from? Do they provide a DPA and opt-out suppression?
• Waterfall enrichment: How many sources do they check? What's the match rate on your actual CRM data, not their sample?
• Email verification: Do they verify syntax only, or do they check MX, SMTP, catch-all, and greylisting? No email verification service can guarantee 100% deliverability.
• Intent data: How fresh is it? Is it account-level or contact-level? Can you explain why a signal triggered?
• Workflow fit: Does it sync with your CRM without creating duplicates? Can your team review before sending?
• Pricing model: Are you paying for raw contacts, verified contacts, intent signals, or seats? The cheapest line item often has the highest hidden cost.

We also asked every vendor one uncomfortable question: 'What should we not use you for?' The vendors who answered honestly moved up the list. The ones who said 'we do everything' moved down.

What I'd do differently next time

It took me five years and about 150 vendor orders to understand that vendor relationships matter more than vendor capabilities. For outbound data, the best vendor is highly context-dependent. If you have a clean ICP, a patient SDR team, and you want agent-native prospecting with human review, Okki Go is worth a pilot. If you need 100,000 raw contacts by Friday and you don't have legal review, you might want a different path.

We didn't choose the cheapest option. We kept Okki Go for targeted outbound research, added a separate email verification service for bulk hygiene, and stayed with our existing enrichment vendor for some regions. It's not the tidy 'one tool to rule them all' story I wanted to tell finance. But it's the one that passed legal and actually worked.

My advice to other admins and RevOps teams: run a pilot with your own CRM data. Ask for the audit trail. Ask what happens when a contact is catch-all. Ask if the AI agent can explain its reasoning. And if a vendor promises to fully replace your SDRs, walk away. No tool does that responsibly—and you don't want to be the person who signed the contract that tried.